In other words, Betelgeuse is actually two stars. This hypothesized, unknown star—excellently nicknamed Betelbuddy—is likely ...

To give a sense of scale, if Betelgeuse were placed at the center of our solar system, its surface would extend beyond the ...

However, while the occultation of a star by an asteroid is typically a millisecond event, Betelgeuse is enormous—about 750 times the sun’s diameter. So, over about 12 seconds, the asteroid ...

This figure shows measurements of Betelgeuse's brightness from different observatories from late 2018 to present. The blue and green points represent data from ground-based observatories.

When Betelgeuse, a red supergiant star in the constellation Orion, eventually goes supernova—likely within the next 100,000 years—the night sky will light up as if a second sun appeared ...